Train's first endpoint of its own, map.source, names the map workouts
are drawn on, for people signed in only, as a provider's key may be in
its style's address: OpenFreeMap's Liberty style where the operator sets
nothing, else MAP_STYLE_URL (HTTPS only) with MAP_SOURCE_NAME,
MAP_ATTRIBUTION and MAP_ABOUT_URL. A model without a table: no
migration. D22 is recorded in ADR 0030.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
Tizian 「ティツィアーン」
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